CVE-2026-20308

mediumcovered by 1 sourcefirst seen 2026-08-05

A vulnerability in the web-based management interface of Cisco IOS XE Software could allow an authenticated, remote attacker with low privileges to perform a denial of service (DoS) attack against an affected device. This vulnerability is due to insufficient input validation. An attacker could exploit this vulnerability by sending crafted input to the web-based management interface of an affected device. A successful exploit could allow the attacker to cause the web-based management interface to become unresponsive. Cisco has released software updates that address this vulnerability. There are no workarounds that address this vulnerability. This advisory is available at the following link: https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-webui-dos-qdc7qx3 Security Impact Rating: Medium CVE: CVE-2026-20308

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Advisory coverage (1)

mediumCisco IOS XE Software Web-Based Management Interface Denial of Service Vulnerabilitycisco-psirt · 2026-08-05

External references

NVD record for CVE-2026-20308

CVE.org record

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